CN102604605B - Inorganic salt dual fluid profile control agent and profile control method thereof - Google Patents
Inorganic salt dual fluid profile control agent and profile control method thereof Download PDFInfo
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- CN102604605B CN102604605B CN 201210025876 CN201210025876A CN102604605B CN 102604605 B CN102604605 B CN 102604605B CN 201210025876 CN201210025876 CN 201210025876 CN 201210025876 A CN201210025876 A CN 201210025876A CN 102604605 B CN102604605 B CN 102604605B
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Abstract
The invention relates to an inorganic dual fluid profile control agent and a profile control method thereof. The inorganic dual fluid profile control agent is formed from a profile control mother liquid and a low temperature complex agent, wherein the profile control mother liquid is obtained by mixing 32-34% of silicon powder, 12-14% of potassium carbonate, 8-10% of sodium tripolyphosphate, 15-17% of zinc oxide, 2-4% of aluminium oxide, 1-3% of aluminium phosphate and 23-25% of soda ash in weight proportion for 40 minutes, adding a mixture into a high temperature furnace and heating to the temperature of 1500-1700 DEG C, adding the mixture into water to be cooled, generating a crystalline product, alcoholising and dissolving until baume degree is 40 degrees; and the low temperature complex agent is white powder formed by mixing 25-27% of boric acid, 30-32% of potassium tripolyphosphate, 26-28% of sodium hexametaphosphate and 15-17% of potassium chloride in weight proportion at normal temperature. The inorganic dual fluid profile control agent provided by the invention is small nanoscale particles, the particles are thrown into a shaft, and reaction is carried out to generate a larger colloid group, thus a large channel and a large crack at a rock layer under the shaft are blocked, problems of injection failure and plugging failure are not existed, and the problems in the current oil field profile control are well solved.
Description
One, technical field:
What the present invention relates to is the amendment that uses in the oilfield chemistry water plugging and profiling technology in the petroleum engineering, and what be specifically related to is a kind of inorganic salt biliquid amendment and profile control method thereof.
Two, background technology:
Along with the moisture continuous rising in oil field, proposed to adjust intake profile at oil deposit deep part, force fluid diversion, improve swept volume, improve the requirement of waterflooding development effect, thereby formed the new focus of deep profile controlling research.The Water in Water Shutoff in Oil Field profile control technique mainly contains: weak gel profile drives technology; Thick oil thermal extraction high-temperature profile control technology; Deep-well ultra deep well water plugging and profiling technology; The profile control and water plugging technology of polymer injection oil reservoir; And the water plugging of horizontal well technology etc. of harnessing the river.
Profile control is meant the operation of the shutoff most permeable zone that carries out from water injection well, can adjust the intake profile of water filling interval.Water blockoff is meant the operation of the shutoff most permeable zone that carries out from oil well, can reduce the product water of oil well.The oil field amendment all is that single liquid injects profile control at present, if the too little obstruction of profile control liquid particle does not live the macropore and the crack of rock, profile control liquid particle is annotated too greatly again and is not advanced in the rock gap or stop up rock gap around the water injection well, can not play good profile control effect.
Three, summary of the invention:
An object of the present invention is to provide a kind of inorganic salt biliquid amendment, another object of the present invention provides the profile control method of this inorganic salt biliquid amendment, is used to solve by single liquid inject the bad problem of profile control effect.
The technical solution adopted for the present invention to solve the technical problems is: this inorganic salt biliquid amendment is made of for composite dose profile control mother liquor and low temperature, and profile control mother liquor wherein is a milky white liquid, and is nontoxic, tasteless, water-soluble back water white transparency; Low temperature wherein is white powder for composite dose, and is water-soluble, nontoxic; The preparation process that profile control mother liquor and low temperature are composite dose is as follows:
The profile control mother liquor is by by weight silica flour 32-34%, salt of wormwood 12-14%, tripoly phosphate sodium STPP 8-10%, zinc oxide 15-17%, aluminum oxide 2-4%, aluminum phosphate 1-3%, soda ash 23-25%, mixed 40 minutes at mixer, add High Temperature Furnaces Heating Apparatus again and be heated to 1500-1700 ℃, add in the entry then and cool off, generate the lenticular product, alcoholization at last is dissolved to degree Beaume 40 degree and generates;
Composite dose of low temperature is by by weight boric acid 25-27%, Potassium tripolyphosphate 30-32%, Sodium hexametaphosphate 99 26-28%, Repone K 15-17%, the white powder that mixes at normal temperatures.
Composite dose of ratio in (by weight) 1:1 of profile control mother liquor in the such scheme and low temperature forms colloid group under 40 ℃ of conditions.
The profile control method of above-mentioned inorganic salt biliquid amendment:
One, clean water injection well with clear water, the injection speed of clear water increases by 10% on the basis of former water injection well waterflood injection rate, and injection pressure increases on the basis of former water injection well injection pressure and is no more than 1%;
Two, preparation profile control biliquid mixes the profile control mother liquor with water, fully stirs, and being modulated into mass percent concentration is the profile control liquid of 10-20%; Composite dose of low temperature is mixed with water, fully stir, being modulated into mass percent concentration is the low temperature compositional liquor of 10-20%;
Three, the profile control biliquid that step 2 is prepared injects water injection well, injection mode is, profile control liquid and low temperature compositional liquor are alternately injected water injection well, and each injection length of profile control liquid, low temperature compositional liquor is 5-7 hour, and injection rate is identical with the injection allocation amount of former water injection well;
Four, in the profile control injection process, observe the water injection well pressure change, till the individual well injection pressure returns to the stratum virgin pressure;
Five, the profile control liquid for preparing with step 2 is as subsequent fluid, replaces profile control liquid that step 2 and step 3 inject and low temperature compositional liquor to the migration of depths, stratum, makes profile control liquid and low temperature compositional liquor thorough mixing, generates colloid group on the stratum, reaches the profile control purpose.
Beneficial effect:
1, amendment provided by the invention is two a kinds very little nano-scale particle thing, they put into the down-hole, but under the temperature condition, reaction generates bigger colloid group, thereby stop up the macropore and the crack of formation downhole, do not exist notes not advance and block up incessantly problem, well solved the knotty problem that present oil field profile control exists.
2, the boric acid in composite dose of the low temperature can be strengthened the intensity of colloidal particle group among the present invention, makes colloidal structure more stable.
Four, embodiment:
Embodiment 1:
This poly-inorganic salt two-fluid process amendment is made of for composite dose profile control mother liquor and low temperature, and profile control mother liquor wherein is a milky white liquid, and is nontoxic, tasteless, water-soluble back water white transparency; Low temperature wherein is white powder for composite dose, and is water-soluble, nontoxic.
The preparation process of profile control mother liquor is as follows:
The profile control mother liquor is by by weight silica flour 32%, salt of wormwood 14%, tripoly phosphate sodium STPP 8%, zinc oxide 17%, aluminum oxide 2%, aluminum phosphate 2%, soda ash 25%, mixed 40 minutes at mixer, add High Temperature Furnaces Heating Apparatus again and be heated to 1500-1700 ℃, add in the entry then and cool off, generate the lenticular product, alcoholization at last is dissolved to degree Beaume 40 degree and generates;
The preparation process that low temperature is composite dose is as follows: composite dose of low temperature is by by weight boric acid 25%, Potassium tripolyphosphate 32%, Sodium hexametaphosphate 99 26%, Repone K 17%, the white powder that mixes at normal temperatures.
Embodiment 2:
This poly-inorganic salt two-fluid process amendment is made of for composite dose profile control mother liquor and low temperature, and profile control mother liquor wherein is a milky white liquid, and is nontoxic, tasteless, water-soluble back water white transparency; Low temperature wherein is white powder for composite dose, and is water-soluble, nontoxic.
The preparation process of profile control mother liquor is as follows:
The profile control mother liquor is by by weight silica flour 33%, salt of wormwood 13%, tripoly phosphate sodium STPP 9%, zinc oxide 16%, aluminum oxide 4%, aluminum phosphate 2%, soda ash 23%, mixed 40 minutes at mixer, add High Temperature Furnaces Heating Apparatus again and be heated to 1500-1700 ℃, add in the entry then and cool off, generate the lenticular product, alcoholization at last is dissolved to degree Beaume 40 degree and generates;
The preparation process that low temperature is composite dose is as follows: composite dose of low temperature is by by weight boric acid 26%, Potassium tripolyphosphate 31%, Sodium hexametaphosphate 99 27%, Repone K 16%, the white powder that mixes at normal temperatures.
Present embodiment has carried out on-the-spot confidentiality experiment and has obtained good effect in grand celebration caster bed oil field.
The source 24-96 well (well) in caster bed oil field just sharply descends at water injection pressure, near source 24-94(oil well) moisture rapid rising, until being flooded fully.All do not deal with problems by profile control several times.We had carried out profile control to this well in 2011, were the whole process of our profile control below.
(1), situation before the source 24-96 well profile control
Source 24-96 well water filling initial stage water injection pressure 12.2Mpa, 12 cubic metres/day of injection rates; Injection pressure is reduced to the 5.19Mpa later stage and is continued to drop to 4.0Mpa (seeing the following form) after several months.
Source 24-96 well water filling information slip
| Time | Day water distribution (m ) | Day water filling (m 3) | Pressure (MPa) | Tired notes (10 4m 3) |
| The water filling |
12 | 12 | 12.20 | 0.0610 |
| 201107 | 12 | 13 | 5.19 | 0.9502 |
| 201108 | 12 | 12 | 5.16 | 0.9874 |
| 201109 | 12 | 12 | 4.72 | 1.0139 |
(2), the relevant oil well situation of source 24-96 well
There is the East West crack in source 24-96 well, its transmeridional source 24-S94, the moisture rapid rising of source 24-S98 well soon after the water filling, and source 24-S94 is moisture up to 99.9%, by water logging fully.(details see the following form)
(3), on-the-spot profile control situation
One, on December 7th, 2011 began to clean water injection well with clear water, the injection speed of clear water increases by 10% on the basis of former water injection well waterflood injection rate, injection pressure increases on the basis of former water injection well injection pressure and is no more than 1%, injection pressure 4Mpa, 12 cubic metres/day of injection rates.
Two, preparation profile control biliquid mixes the profile control mother liquor with water, fully stirs, and being modulated into mass percent concentration is the profile control liquid of 10-20%; Composite dose of low temperature is mixed with water, fully stir, being modulated into mass percent concentration is the low temperature compositional liquor of 10-20%, and promptly the profile control biliquid refers to profile control liquid and low temperature compositional liquor.
Three, December 9, the profile control biliquid that begins step 2 is prepared injects water injection well, injection mode is, profile control liquid and low temperature compositional liquor are alternately injected water injection well, inject two kinds of preparations of profile control liquid and low temperature compositional liquor during this time switched once in per 6 hours, injection rate is identical with the injection allocation amount of former water injection well, 12 cubic metres/day of injection rates; Injection pressure 4.5Mpa.
Four, in the profile control injection process, observe the water injection well pressure change, continue to December 23 injection pressure and progressively rise to 11.0Mpa, the virgin pressure that individual well injects is 11.0Mpa, and profile control injected 4.232 tons in profile control mother liquor in 14 days altogether, composite dose 4.232 tons of low temperature.
Five, use profile control liquid as subsequent fluid, the injection rate of profile control liquid is 4.993 tons, the profile control liquid and the low temperature compositional liquor that replace the injection of step 2 and step 3 are migrated to the depths, stratum, make profile control liquid and low temperature compositional liquor thorough mixing, generate colloid group on the stratum, profile control effect is obvious, has reached re-set target, and profile control opisthogenesis 24-94 well is moisture obviously to drop to 75%.
Fig. 1 is pressure (12 cubic metres/day of injection rates) variation line in time, and X-coordinate is for injecting the amendment fate among Fig. 1, and ordinate zou is injection pressure (MPa).
Embodiment 3:
This poly-inorganic salt two-fluid process amendment is made of for composite dose profile control mother liquor and low temperature, and profile control mother liquor wherein is a milky white liquid, and is nontoxic, tasteless, water-soluble back water white transparency; Low temperature wherein is white powder for composite dose, and is water-soluble, nontoxic.
The preparation process of profile control mother liquor is as follows:
The profile control mother liquor is by by weight silica flour 34%, salt of wormwood 12%, tripoly phosphate sodium STPP 10%, zinc oxide 15%, aluminum oxide 2%, aluminum phosphate 3%, soda ash 24%, mixed 40 minutes at mixer, add High Temperature Furnaces Heating Apparatus again and be heated to 1500-1700 ℃, add in the entry then and cool off, generate the lenticular product, alcoholization at last is dissolved to degree Beaume 40 degree and generates;
The preparation process that low temperature is composite dose is as follows: composite dose of low temperature is by by weight boric acid 27%, Potassium tripolyphosphate 30%, Sodium hexametaphosphate 99 28%, Repone K 15%, the white powder that mixes at normal temperatures.
Claims (2)
1. inorganic salt biliquid amendment, it is characterized in that: this inorganic salt biliquid amendment is made of for composite dose profile control mother liquor and low temperature, composite dose of described profile control mother liquor and low temperature is the ratio of 1:1 by weight, under 40 ℃ of conditions, form colloid group, profile control mother liquor wherein is a milky white liquid, nontoxic, tasteless, water-soluble back water white transparency; Low temperature wherein is white powder for composite dose, and is water-soluble, nontoxic; The preparation process that profile control mother liquor and low temperature are composite dose is as follows:
The profile control mother liquor is by by weight silica flour 32-34%, salt of wormwood 12-14%, tripoly phosphate sodium STPP 8-10%, zinc oxide 15-17%, aluminum oxide 2-4%, aluminum phosphate 1-3%, soda ash 23-25%, mixed 40 minutes at mixer, add High Temperature Furnaces Heating Apparatus again and be heated to 1500-1700 ℃, add in the entry then and cool off, generate the lenticular product, alcoholization at last is dissolved to degree Beaume 40 degree and generates;
Composite dose of low temperature is by by weight boric acid 25-27%, Potassium tripolyphosphate 30-32%, Sodium hexametaphosphate 99 26-28%, Repone K 15-17%, the white powder that mixes at normal temperatures.
2. the profile control method of the described inorganic salt biliquid of claim 1 amendment; It is characterized in that: the profile control method of this inorganic salt biliquid amendment:
One, clean water injection well with clear water, the injection speed of clear water increases by 10% on the basis of former water injection well waterflood injection rate, and injection pressure increases on the basis of former water injection well injection pressure and is no more than 1%;
Two, preparation profile control biliquid mixes the profile control mother liquor with water, fully stirs, and being modulated into mass percent concentration is the profile control liquid of 10-20%; Composite dose of low temperature is mixed with water, fully stir, being modulated into mass percent concentration is the low temperature compositional liquor of 10-20%;
Three, the profile control biliquid that step 2 is prepared injects water injection well, injection mode is, profile control liquid and low temperature compositional liquor are alternately injected water injection well, and each injection length of profile control liquid, low temperature compositional liquor is 5-7 hour, and injection rate is identical with the injection allocation amount of former water injection well;
Four, in the profile control injection process, observe the water injection well pressure change, till the individual well injection pressure returns to the stratum virgin pressure;
Five, the profile control liquid for preparing with step 2 is as subsequent fluid, replaces profile control liquid that step 2 and step 3 inject and low temperature compositional liquor to the migration of depths, stratum, makes profile control liquid and low temperature compositional liquor thorough mixing, generates colloid group on the stratum, reaches the profile control purpose.
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| CN104632159B (en) * | 2014-12-31 | 2017-06-13 | 大港油田集团有限责任公司 | Precipitate profile control method in water injection well in oil fields deep |
| CN104806195B (en) * | 2015-03-14 | 2017-07-28 | 肖传敏 | A kind of alternative effect thickening thin oil transfer drive method and system |
| CN104775799B (en) * | 2015-03-14 | 2017-05-10 | 肖传敏 | Profile control method and system for thickening well thin oil |
| CN108003855B (en) * | 2017-11-10 | 2020-11-10 | 中国石油大学(华东) | Single-liquid inorganic precipitation type plugging agent, preparation method and application thereof |
| CN109852362A (en) * | 2018-12-28 | 2019-06-07 | 中国海洋石油集团有限公司 | The double slug profile control agents and its method for implanting that heterogeneous reservoir predominant pathway controls after a kind of poly- drive |
| CN109653707B (en) * | 2019-01-29 | 2023-11-07 | 安东柏林石油科技（北京）有限公司 | Method for dewatering and increasing oil by filling packing body particles in oil and gas well of fractured oil and gas reservoir |
| CN116042199B (en) * | 2021-10-28 | 2023-12-22 | 大庆油田有限责任公司 | Double-liquid type selective plugging agent and preparation method thereof |
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| CN1982407A (en) * | 2006-03-17 | 2007-06-20 | 李英范 | SJT-B-oil-displacing synergist |
| CN101058723A (en) * | 2007-04-26 | 2007-10-24 | 中国石油大学(华东) | Re-use agent for polymer after driving and injecting method thereof |
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| WO2007001344A2 (en) * | 2004-09-03 | 2007-01-04 | The University Of Chicago | Chemically bonded phosphate ceramic sealant formulations for oil field applications |
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| CN1982407A (en) * | 2006-03-17 | 2007-06-20 | 李英范 | SJT-B-oil-displacing synergist |
| CN101058723A (en) * | 2007-04-26 | 2007-10-24 | 中国石油大学(华东) | Re-use agent for polymer after driving and injecting method thereof |
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Inventor after: Sang Jingtang Inventor after: Hou Yanxiang Inventor after: Cao Liwei Inventor after: Liu Jingwen Inventor before: Sang Jingtang Inventor before: Hou Yanxiang Inventor before: Cao Liwei |
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Effective date of registration: 20150827 Address after: 163319 7-1-2, Xinfa street, hi tech Development Zone, Heilongjiang, Daqing Patentee after: Daqing Huiling Petroleum Technology Co., Ltd. Address before: 163316 No. 10 Xinfeng Road, Daqing Development Zone, Heilongjiang, China Patentee before: Daqing Ding-ao Oilfield Technology Co., Ltd. |
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